I was just thinking about this the other day, I thought about a life mod.
You would be able to buy food. There would be 2 types of each food: One non-checked out version you can't eat, and another you can. They would be items, how this would work is you would build a store and a storage room with all the checked out food, and in the main part of the store the non-checked out food. You would grab a box of un-checked out food, go up to the register and pay, then you would give the non-checked out food to the cashier and then the cashier would go into the storage and get the checked out food and give it to the customer.
You would have a life meter, the lower it goes the hungrier. You eat the checked out food to regain 10+ life. Of course the life meter would hold 100 life.
You should also be able to marry people by typing /marry nameofplayer. A message would pop up on their screen saying "Would you like to marry yourname?" and two options, yes or no.
Once you are married you can have a baby, to do that type /baby nameofplayer. Then the message would pop up on their screen saying "Would you like to have a baby with yourname?" and two options, yes or no. I'm not sure how the baby system would work, but it would be similar to Mr. Pickles.
P.S: To eat the food you have to be carrying the food, then you just click.